Is your refrigerator making clicking sounds every few minutes or failing to start properly? This QINALO start relay and overload protector set might be your solution! Designed for 1/2HP compressors, this 1-pin PTC start relay (model QP-02-4.7) with 3-4.7 ohm resistance works together with the matching overload protector to get your cooling system running smoothly again. These replacement parts are widely compatible with mini fridges, compact refrigerators, beverage coolers, deep freezers, wine refrigerators, and various cooling appliances. The high-quality materials ensure stable performance and reliability – no more worrying about your food spoiling because the compressor won't start. Installation is straightforward for direct replacement of old or faulty parts. Common symptoms that indicate you might need this set include: compressor not starting at all, or making clicking sounds every 3-5 minutes when powered on. Important reminder: please carefully compare the pictures with your old parts and verify that your current relay has 1 pin to ensure compatibility before purchasing. The metal and plastic construction is durable and built to handle the demands of compressor operation. Whether you're a DIY enthusiast or a repair professional, having these essential spare parts on hand can save you from expensive service calls and prevent food loss. The set comes complete with both the start relay and overload protector, giving you everything needed to address common refrigerator starting issues. Reliable performance that gets your cooling appliance back in business quickly and affordably!